Dust catcher



Feb. 5, 1924. mszo F. E. KLING DUST CATGHER Filed Aug. 4, 1922 4Sheets-Sheet l Fe., 5, w24; v www@ F. E. KLING DUST CATGHER F'. E. KUNGDUST CATCHER Filed Aug. 4, 1922 `4 Sheets-Sheet 4 Patented' Feb. 5,1924.

Unirse 'STATES PATENT omer..

' FBED E. KLING, 0F YOUNGSTOWN, OHIO.

' DUST carcan.

` Application mea august 4,1922. serial No. 579.682.

. To allY whom t mag/concern.'

Be 'it known that I, FRED E. KLING, a citizen of the United States, andresident of Youngstown, in the county of Mahoning and State of Ohio,have invented certain new4 and useful Improvement in Dust Catchers, ofwhich thefollowing is a speci-V ication.

This invention relates to dust catchers,

and, while not limited thereto, relates particularly to 'secondary gascatchers used for removing the ldust from hot blast furnace Ikgas priortoits passage into the gas cleaners.

One object of the present invention is to divide the gas flow into aplurality of small ows during its passage throu h the catch! er, so asto more thoroughly c can the gas.

Another object isto trap and separate the e dust from the gas flow so-as to prevent it being picked up by the oncoming gases and carried intothe gas cleaners.

A further object is to provide a dust catcher having the novelarrangement, combination and construction of parts hereinafter describedand illustrated in the ac- :f companying drawings.

In the drawings, Figure 1 is aside ele- Figure 3 isa sectional sideelevation onA `the line Ill-HI of Figure 2.

. Figure 4 is. an enlarged fragmentay detail showing the platearrangementC an construction.

Figure 5-is anl enlarged plan of'a portionv of a dust trapping plate.

Referring more particularly to the draw.-

- l ings, the numeral'2 designates the primary 45 dustcatcher, which maybe of any well known ldesi The primary dust catcher 2 is` rovideld withan inlet conduit 3, throng which the gases are received direct from thefurnace, and an outlet conduit 4 leads from the o posite ^side of theprimary dust catcher an is connected to'the inlet port of the secondarydust catcher 5.

The prima dust catcher allows the gases to expand an therefore, lessenstheir velocity, and as a .result the heavier particles of ore, coke,limestone, etc.,are.deposited within this catcher. y y

The secondary dust catcher 5 is provided with an outlet port at theopposite side from the inlet port and a conduit 6 extends from this portto the gas cleaner 7, which maybe of any ordinary design. It will, lofcourse, be understood that more than one gas clean-v er may be used ifdesired.

The secondary cleaner'5 is constructed in accordance to this inventionand comprises a casing composed of an outer metallic shell 8 andv bricklining 9. A plurality of vertical'supports 10 are mounted in the casingand have their upper ends secured to the casing and their lower endssecured to the transverse girders 11.

Longitudinal angle supports 12 are mounted within the casing, seme beingsecured to the members 10 and others being se-Y curedto arched anglesupports 15 along the dome or top of the casing, and to the transversegirders 11, respect1vely.

The vertical supports 10 are arranged in three series, one series beingin the center of the catcher and the others being adjacent each side ofthe catcher.

The space within the casing above the girders 11 forms the cleaning ordust sepa-v rating chamber A, and the space below the girders 11 -formsa dust receiving chamber B. The lower end of the dust receiving chamberis provided with a discharge port 16, closed by a bell valve 17 havingthe usual operating lever 18.

A plurality of dust receiving and conveying plates 19 are secured to theangle supports 12 so as to be inclined transversely or downwardly andoutwardly from the center of the catcher. The plates '19 are solid orunapertured and form supports for dust trapping plates 20, which havetheir upper ends ecured to the plates A19 and are vsupporte in spacedrelation along their length by bars 21. The plates 20 are apertured asat 22 to form dust traps, which permit the dust to fall through onto theplates 19.

. The plates 20 may be apertured in any desired manner, but referablywill be provided with substantiallyk trian lar apertures formed by'cutting the meta alon two sides of a triangle, and bending the 'restant tongue 23 downwardly. The tongues, which are attached along-.theone ed e of the opening formV bellies to prevent t e lpassage of gasthrough the openings. It will be especially noted that in assembling theplates they are positioned so that the attached sides of the ytonguesare nearest the outlet port of the catcher, so that the flow of gas willbe towards said tongues or baiiles.

The outer longitudinal ends of the plates 19 are bent downwardly` to apoint approxi,- mately on a line with the next dust trapping plate 20,and the plates 20 are slightly shorter than the plates 19, thus arestricted outlet is provided at the lower end of the plates for thedischarge of any accumulated dust', although being of such size that itwill prevent the iow of gas therethrough.

The plates 19 and 20 are arranged in pairs. 'Ihat is, each plate 19supports a plate 20 and the plates all terminate short of the side walls'of the casing so as to provide a dust discharge passage 26.

The plates 19 are eachprovided with baffle angles 27 and 28 along theirinlet and outlet ends, respectively. The baille angles 27 are ofgreaterheight than the angle bafles 28 and extend upwardly to a point justbelow the next plate 19, thus forming a very restricted gas inletpassage between the plates. However, while the angle baffles 28 are notas high as the baiiies 27 they extend above the plates 20 and form arestricted outlet for the gases passing from between the plates.

In operation. the gases enter the secondary dust catcher 5 from theprimary dust catcher 2, in which the coarser foreign -nat ter has beendeposited. As the gases enter the secondary dust catcher 5 they arecompelled to sp-lit up into numerous vsmall streams and flow between theplates 19 and 20, and, due to the baffle angles 27, any coarse particlescarried in the vgases will be baffled out and compelled to ass into thedust receiving chamber B.- Xs the gases pass be- Y tween the plates 19and 20, that is, over the plates 20, any dust carried thereby will settle onto the plates 20, and due to-their inclined arrangement, willslide downwardly along the plate until it reaches one of the apertures22, when it will be discharged onto the plate 19. The batlles or tongues23 in the apertures will prevent the gas flowing through the apertures,and, therefore, dust deposited on the plates 19 will not be flisturbedby the oncoming gases.

The dust deposited on the plates 19 will travel along the plate and bedischarged into the space 26 and chamber B, from which it will bedischarged at intervals.

` The gases will pass from between the plates 19 and 2O by passing overthe baffle angles, 28, from which point they will flow through theoutlet conduit 6 to the gas cleaner 7 The primary features of thisvinvention lie meeste in breaking the gases up into numerous small orshallow streams, and trapping the dust independently from each of thestreams, thus getting a thorough cleaning of the gases and preventingthe separated dust from comin into contact with the oncoming gases.

IlVhile I have illustratedonly one specific embodiment of my invention,1t will lbe understood that various modifications may be made withoutdeparting from the scope of my invention as defined in the appendedclaims.

I claim 1. A dust catcher comprising a casing, Aa plurality of spacedplates extendin yfrom lthe center of said casing downwar ly andoutwardly toward the side walls thereof, means for supporting saidplates, said plates bein'V arranged in pairs and terminating short ofthe side walls of said casing so as to permit dust to travel downwardlyalong the side walls of the casing, the upper plate of each pair ofplates being provided with perforations through which dust may fall andthe lower plate being unapertured, and an inlet and outlet for the gasesadapted to cause a iow of lgas across said plates.

Y, 2. A dust catcher comprising a casing, a plurality of spaced platesextending from the center of said casing downwardly and outwardly towardthe side walls thereof, means for supporting said plates, said platesbeing arranged in pairs and terminating short of the side walls of saidcasing so as to permit dust to travel downwardly along thelside walls ofthe casing, the upper plate of each pair of plates being provided withperforations through which dust may fall and the lower plate beingunapertured, an inlet and outlet for the gases adapted to cause a flowof gas across said plates, and a chamber below4 said plates adapted toreceive the dust separated from the gas.

3. A dust catcher comprising a casing, a plurality of spaced platesextending from the center of said casing downwardly and outwardly towardthe side walls thereof, means for supporting said plates, said platesbeing arranged in pairs and terminating ins shortof the side walls ofsaid casing so as vIn testimony whereof, I have hereunto set my hand.

FRED E. KLING.

